FERC staff prepared a draft environmental impact statement for Guardian Pipeline, L.L.C.'s (Guardian) Guardian Expansion and Extension Project. The proposed Project consists of 83.6 miles of 30-inch-diameter and 25.9 miles of 20-inch-diameter natural gas pipeline, two new 39,000 horsepower electric-motor-driven compressor stations, modifications to the existing Ixonia Meter, and the construction of seven new meter stations and pig launcher and receiver facilities in Illinois and Wisconsin.

FERC's environmental staff concludes that the Guardian Expansion and Extension Project with appropriate mitigating measures, as recommended, would have limited adverse environmental impact.

The U.S. Army Corps of Engineers; the Department of the Interior, Bureau of Indian Affairs; and the Wisconsin Department of Natural Resources cooperated in the preparation of the draft EIS.